Greenway Biotech Cal Mag Plus Iron EDTA - 10 Pounds (Makes 4 Gallons) Magnesium & Calcium Supplement

If you're into hydroponics or just want to give your plants a boost, this Cal Mag Plus from Greenway Biotech is solid.

It's a 10-pound bag of powdered calcium, magnesium, and iron (chelated with EDTA).

Mix it up—it makes about 4 gallons of concentrated supplement.

Works for all kinds of plants: flowers, roses, vegetables, whatever.

Made in the USA, good stuff.

Helps prevent blossom end rot, strengthens cell walls, and keeps your plants green and healthy.

Easy to store, easy to use.